EP2291041A2 - Système de recherche de personnes - Google Patents
Système de recherche de personnes Download PDFInfo
- Publication number
- EP2291041A2 EP2291041A2 EP20100181827 EP10181827A EP2291041A2 EP 2291041 A2 EP2291041 A2 EP 2291041A2 EP 20100181827 EP20100181827 EP 20100181827 EP 10181827 A EP10181827 A EP 10181827A EP 2291041 A2 EP2291041 A2 EP 2291041A2
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- Prior art keywords
- paging
- radio network
- network controller
- message
- search
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/12—Inter-network notification
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/02—Inter-networking arrangements
Definitions
- the present invention relates to radio network controllers, and paging systems and paging methods using the same, and particularly relates to a radio network controller that performs a simultaneous call for finding the location of a mobile station from base stations according to the paging procedure of the RANAP (Radio Access Network Application Part) protocol, and a paging system and a paging method using the same.
- RANAP Radio Access Network Application Part
- the paging procedure of the RANAP protocol is performed as follows. That is, when a paging command is transmitted from a core network (CN) including a mobile switching center (MSC) to a radio network controller (RNC), the radio network controller, in response to the command, performs a paging processing for simultaneously calling amobile station.
- CN core network
- MSC mobile switching center
- RNC radio network controller
- the radio network controller in response to the command, performs a paging processing for simultaneously calling amobile station.
- the range of common ID that is, the number of mobile stations which the system accommodates
- a large amount of processes is incurred at the radio network controller. For this reason, reduction of the amount of processes has been a concern for years.
- RRC connection Radio Resource Control
- IMSI International Mobile Subscriber ldentifier
- IMSI International Mobile Subscriber ldentifier
- IMSI is four bytes in length and therefore has a maximum value of 2 32 (approximately 4.3 x 10 9 ).
- searching IMSI at each time of paging incurs a considerably large load.
- Fig. 1 shows a conventional paging message (paging message from a core network to a radio network controller, hereinafter referred to as "paging message (core to base)").
- the radio network controller upon receiving a paging message (core to base), transmits the paging message via a radio paging control channel (PCCH) or a dedicated control channel (DCCH).
- PCCH radio paging control channel
- DCCH dedicated control channel
- the radio network controller searches whether an RRC connection has already been established for a targeted receiving mobile station using a common ID in the message as a key.
- a paging message (paging message from the radio network controller to the mobile station, hereinafter referred to as "paging message (base to mobile)" is transmitted via the paging control channel if an RRC connection has not been established and via the dedicated control channel if an RRC connection has been established.
- the paging message (base to mobile) is transmitted via the radio paging control channel to a mobile station that is not busy in a communication
- a mobile station that is busy in a communication does not allow the message to be received via the paging control channel and thus the paging message (base to mobile) must be transmitted via the dedicated control channel using an RRC connection that has already been established.
- Fig. 2 is a diagram showing a paging sequence by which a paging processing is performed to simultaneously call a mobile station 300 from a core network 100 via a radio network controller 200.
- the core network 100 includes a mobile switching center that is not shown, and a connection is set up between the mobile switching center and the radio network controller 200 by the SCCP (Signaling Connection Control Part) protocol.
- the radio network controller 200 controls base stations that are not shown, and a connection is set up between the base stations and the mobile station 300 based on the RRC protocol.
- a paging message (core to base) 11 of the RANAP protocol is transmitted from the core network 100 to the radio network controller 200 by the connectionless SCCP protocol. It is to be assumed that the paging message (core to base) 11 includes a common ID for identifying a mobile station.
- the radio network controller 200 searches whether an RRC connection has already been set up for the mobile station 300 designated by a common ID information element in the paging message (core to base) 11. In this case, the search is performed using a table shown in Fig. 3 , that is, a table indicative of associations between common IDs and RRC connections (step 21 in Fig. 2 ).
- paging 1 message base to mobile
- PCCH paging 1 message
- a paging 2 message (base to mobile) 13 is transmitted using a dedicated control channel DCCH identified by the search result.
- DCCH paging 2 message
- the radio network controller 200 can be connected to two types of core network as follows:
- Nodes with packet service function and nodes with circuit service function are physically separated.
- Packet service function and circuit service function are combined within a single node. Furthermore, the combined core networks are divided into two types as follows depending on the presence/absence of co-ordination function:
- Packet service function and circuit service function physically reside within a single node. However, the functions operate individually.
- Packet service function and circuit service function are coordinated.
- the combined core network with co-ordination function is capable of recognizing whether a mobile station that is targeted by a paging request already has an RRC connection. For example, when a request for receiving a circuit switched call is issued to a mobile station, within the core network, a circuit service function unit is capable of querying a packet service function unit as to whether a packet call is currently established. It is determined that an RRC connection has been established if a packet call has already been established and that an RRC connection has not been established if a packet call has not been established.
- SCCP resides in a layer above MTP (Message Transfer Part) and below RANAP.
- SCCP services are either "connectionless,” in which a connection is not set up and a communication is performed on a one-time basis, or "connection oriented,” in which a connection is set up in advance and a communication is performed using the connection that has been set up.
- the radio network controller performs a search using the common ID unconditionally in response to a paging request.
- the paging procedure at the radio network controller suffers from the drawback that a large amount of processes is incurred in order to search for the common ID.
- Japanese Unexamined Patent Publication Tokkai No. Hei 1-316050 achieves, by improving an application for a switch, a connection method with immediacy for a connection between a calling subscriber and a receiving subscriber who is called.
- the publication only discloses technical ideas regarding a system for calling a receiving subscriber with a pager, and is completely different from the present invention, which relates to a simultaneous call for finding the location of a mobile station from base stations.
- Japanese Unexamined Patent Publication Tokkai No. Hei 9-168053 discloses a method for communicating maintenance information to a remote apparatus including a remote processor and a pager circuit.
- the publication is also completely different from the present invention, which relates to a simultaneous call for finding the location of a mobile station from base stations.
- the present invention has been made in order to overcome the drawback of the conventional art described above, and an object thereof is to provide a radio network controller that serves to reduce the amount of processes for searching for a common ID in a paging procedure, and a paging system and a paging method using the same.
- a radio network controller is a radio network controller in a paging system that performs a paging processing for simultaneously calling a mobile station in response to a paging command from a core network, wherein a flag indicating whether or not a mobile switching center of said core network has the function of co-ordinating a packet service and a circuit service is added to said paging command, and said radio network controller comprises determination means for determining whether or not said flag indicates that said co-ordinating function is present; and paging processing means for performing said paging processing using one of a paging control channel and a dedicated control channel depending on the connection status between said core network and said radio network controller if said flag is determined as indicating the presence of said co-ordinating function.
- said paging control channel is used if the connection status between said core network and said radio network controller is connectionless, and said dedicated control channel is used if the connection status between said core network and said radio network controller is connection oriented.
- Said paging command may further include a connection ID for identifying a connection between said radio network controller and a mobile station that is in a communication, so that said paging processing is performed using the dedicated control channel by identifying the connection by said connection ID.
- a paging system is a paging system that performs a paging processing for simultaneously calling a mobile station from a radio network controller in response to a paging command from a core network, wherein said radio network controller comprises paging processing means for performing said paging processing using one of a paging control channel and a dedicated control channel depending on whether or not a mobile switching center of said core network has the function of co-ordinating a packet service and a circuit service. If the mobile switching center of said core network has the function of co-ordinating a packet service and a circuit service, a search for a common ID is not required at said radio network controller.
- said radio network controller serves to reduce the amount of processes for searching for a common ID in a paging procedure.
- a paging method is a paging method that performs a paging process ing for simultaneously calling a mobile station from a radio network controller in response to a paging command from a core network, wherein said method comprises a paging processing step of performing, in said radio network controller, said paging processing using one of a paging control channel and a dedicated control channel depending on whether or not a mobile switching center of said core network has the function of co-ordinating a packet service and a circuit service.
- the present invention provides means for reducing the amount of processes for searching for a common ID in a paging procedure at a radio network controller.
- the present invention provides two types of paging message of the RANAP protocol, as will be described later. By providing the two types of paging message, unnecessary processes for searching for a common ID is saved at the radio network controller.
- Fig. 1 is a diagram showing a conventional paging message (core to base).
- Fig. 2 is a diagram showing a paging sequence in a conventional paging system.
- Fig. 3 is a diagram showing a table indicative of associations between common IDs and RRC connections.
- Fig. 4 is a diagram showing the relationship between SCCP and other layers.
- Fig. 5 is a diagram showing the contents of a paging 1 message (core to base) in a paging system according to a first embodiment of the present invention.
- Fig. 6 is a diagram showing the contents of a paging 2 message (core to base) in the paging system according to the first embodiment of the present invention.
- FIG. 7 is a diagram showing a paging 1 sequence in the paging system according to the first embodiment of the present invention.
- Fig. 8 is a diagram showing a paging sequence from a combined core network.
- Fig. 9 is a diagram showing a paging 1 sequence in the paging system according to the first embodiment of the present invention.
- Fig. 10 is a diagram showing a paging sequence from a combined core network.
- Fig. 11 is a diagram showing a paging 2 sequence in the paging system according to the first embodiment of the present invention.
- Fig. 12 is a diagram showing a paging 2' sequence (core to base) in a paging system according to a second embodiment of the present invention.
- FIG. 13 is a diagram showing a paging sequence from a combined core network.
- Fig. 14 is a diagram showing a paging 2' sequence in the paging system according to the second embodiment of the present invention.
- Fig. 15 is a diagram showing connections among a mobile switching center included in a core network, radio network controllers, and base stations.
- Fig. 16 is a diagram showing the contents of a paging 1' message (core to base) in a paging system according to a third embodiment of the present invention.
- Fig. 17 is a diagram showing the contents of a paging 2 message (core to base) in the paging system according to the third embodiment of the present invention.
- Fig. 18 is a diagram showing a paging 1 sequence in the paging system according to the third embodiment of the present invention.
- Fig. 19 is a diagram showing a paging sequence from a combined core network.
- Fig. 20 is a diagram showing a paging 1 sequence in the paging system according to the third embodiment of the present invention.
- Fig. 21 is a diagram showing a paging sequence from a combined core network.
- Fig. 22 is a diagram showing a paging 2 sequence in the paging system according to the third embodiment of the present invention.
- Fig. 23 is a diagram showing a paging sequence for explaining an embodiment relating to a case where an RRC connection has already been established for a destination mobile station.
- Fig. 19 is a diagram showing a paging 1 sequence in the paging system according to the third embodiment of the present invention.
- Fig. 20 is a diagram showing a paging 1 sequence in the paging system according to the third embodiment
- FIG. 24 is a diagram showing a paging 2' sequence (core to base) in a paging system according to a fourth embodiment of the present invention.
- Fig. 25 is a diagram showing a paging sequence from a combined core network.
- Fig. 26 is a diagram showing a paging 2' sequence in the paging system according to the fourth embodiment of the present invention.
- Fig. 27 is a diagram showing the operations of the paging systems according to the third and the fourth embodiments of the present invention.
- Fig. 28 is a diagram showing connections among a mobile switching center included in a core network, radio network controllers, and base stations.
- paging 1 message core to base
- paging 2 message core to base
- Fig. 5 shows the configuration of a paging 1 message (core to base)
- Fig. 6 shows the configuration of a paging 2 message (core to base), respectively.
- a "co-ordination function presence/absence flag" is added to the information elements of the paging message shown in Fig. 1 .
- the co-ordination function presence/absence flag indicates whether or not the mobile switching center of the core network has the function of co-ordinating packet service and circuit service.
- the paging 2 message (core to base) shown in Fig. 6 is a new message that is completely different from the paging message (core to base) shown in Fig. 1 .
- the paging 2 message (core to base) does not have any information element.
- a separated core network and a combined core network without co-ordination function use only the paging 1 message (core to base) ( Fig. 5 ).
- a core network with co-ordination function uses both the paging 1 message (core to base) ( Fig. 5 ) and the paging 2 message (core to base) ( Fig. 6 ).
- the paging 1 message (core to base) ( Fig. 5 ) is used when the first paging (an RRC connection has not been established for the mobile station) is reliably assumed or when a possibility for the first paging exists.
- the paging 2 message (core to base) ( Fig. 6 ) is used when the second or a subsequent paging (an RRC connection has been established for the mobile station) is reliably assumed.
- Fig. 7 shows the operations of the core network 400, the radio network controller 200, and the mobile station 300, and messages exchanged.
- the core network 400 without co-ordination function transmits a paging 1 message (core to base) 14 ( Fig. 5 ) to the radio network controller 200. At this time, the co-ordination function presence/absence flag in the paging 1 message (core to base) 14 is set to "OFF.”
- the radio network controller 200 Upon receiving the paging 1 message (core to base) 14, the radio network controller 200 checks the co-ordination function presence/absence flag in the message (step 22 in Fig. 7 ). Inasmuch as the co-ordination function presence/absence flag is "OFF," a next common ID is searched for and checked (step 21 in Fig. 7 ). The subsequent sequence is similar as that in the conventional system. In this case, the presence/absence of an RRC connection is determined based on the table shown in Fig. 3 , that is, the table indicative of associations between common IDs and RRC connections, so that a paging 1 message (PCCH) 12 or a paging 2 message (DCCH) 13 of the RRC protocol is transmitted to the mobile station 300.
- PCCH paging 1 message
- DCCH paging 2 message
- a paging processing from a core network with co-ordination function will be described with reference to Figs. 8 to 11 .
- a case where an RRC connection has not been established for a destination mobile station that is, a case of the first paging message, will be described with reference to Figs. 8 and 9 .
- Fig. 8 shows an example in which a circuit switched call to a mobile station 34 that is not busy in a communication is received.
- a circuit switched call is received at a mobile switching center 30 included in a core network 500 ( Fig. 9 )
- a circuit service function unit 32 transmits a query 42 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 31.
- the circuit service function unit 32 receives a reply 43 to the effect that "the mobile station 34 is not busy in a communication" from the packet service function unit 31 and recognizes the first paging.
- the circuit service function unit 32 prepares a paging 1 message (core to base), sets the co-ordination function presence/absence flag "ON" to indicate that a search has already been performed, and transmits the paging 1 message (core to base) 44 ( Fig. 5 ) to a radio network controller 33 by connectionless SCCP.
- Fig. 9 shows the operation of the radio network controller that has received the paging 1 message (core to base) 44.
- the radio network controller 200 upon receiving the paging 1 message (core to base) 15 ( Fig. 5 ) from the core network 500, the radio network controller 200 checks the value of the co-ordination function presence/absence flag in the message (step 22 in Fig. 9 ). Inasmuch as the co-ordination function presence/absence flag is "ON," the process of searching for the common ID is skipped, and a paging 1 message (PCCH) 12 of the RRC protocol is transmitted to the mobile station 300 via a paging control channel. Referring back to Fig. 8 , the paging 1 message (PCCH) 45 (12 in Fig. 7 ) has been transmitted from the radio network controller 33 to the mobile station 34.
- PCCH paging 1 message
- Fig. 10 shows an example in which a circuit switched call to a mobile station 54 that is busy in a packet service communication is received.
- a circuit switched call 61 is received at a mobile switching center 50 included in the core network 500 ( Fig. 11 )
- a circuit service function unit 52 transmits a query 62 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 51.
- the circuit service function unit 52 receives a reply 63 to the effect that "the mobile station 54 is busy in a communication" and recognizes that the mobile station 54 has already established an RRC connection.
- the circuit service function unit 52 prepares a paging 2 message (core to base) ( Fig.
- Fig. 6 transmits the paging 2 message (core to base) 64 ( Fig. 6 ) to a radio network controller 53 in a connection oriented manner with reference to the SCCP connection that has already been established for a packet call between the mobile switching center 50 and the radio network controller 53.
- Fig. 11 shows the operation of the radio network controller that has received the paging 2 message (core to base) 64.
- the radio network controller 200 upon receiving the paging 2 message (core to base) 16 ( Fig. 6 ) from the core network 500, the radio network controller 200 identifies the RRC connection for the mobile station 300 from the SCCP connection between the core network 500 and the radio network controller 200 (step 23 in Fig. 11 ). Then, the radio network controller 200 transmits a paging 2 message (DCCH) 13 of the RRC protocol that has been identified for the mobile station 300 via a dedicated control channel DCCH.
- DCCH paging 2 message
- the paging 2 message (DCCH) 65 (13 in Fig. 9 ) has been transmitted from the radio network controller 53 to the mobile station 54.
- a response 66 from the mobile station 54 may be returned either using the SCCP connection 67 for a packet call between the mobile switching center 50 and the radio network controller 53 or by a new SCCP connection establishing request 68 for a circuit switched call between the mobile switching center 50 and the radio network controller 53.
- two types of paging message (core to base) with respect to the co-ordination function of core networks are newly provided so that means are provided for transmitting information recognized by a core network to a radio network controller, allowing the radio network controller to determine whether or not a search for a common ID is required based on the information. Accordingly, the amount of processes for searching for a common ID in a paging procedure at the radio network controller is reduced.
- Fig. 12 shows the configuration of a paging 2' message (core to base) according to the second embodiment of the paging 2 message (core to base).
- the message is transmitted by connectionless SCCP and a connection ID is added to the information elements.
- Fig. 13 shows an example in which a circuit switched call to a mobile station 74 that is busy in a packet service communication is received.
- a circuit switched call 81 is received at a mobile switching center 70 included in a core network
- a circuit service function unit 72 transmits a query 82 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 71.
- the circuit service function unit 72 receives a reply 83 to the effect that "the mobile station 74 is busy in a communication" from the packet service function unit 71 and recognizes that the mobile station 74 has already established an RRC connection.
- the circuit service function unit 72 sets a connection ID indicating an SCCP connection that has been established for a packet call between the mobile switching center 70 and a radio network controller 73 in a paging 2' message (core to base) ( Fig. 12 ), and transmits the paging 2' message (core to base) 84 ( Fig. 12 ) in a connectionless manner.
- Fig. 14 shows the operation of the radio network controller that has received the paging 2' message (core to base) 84.
- the radio network controller 200 upon receiving the paging 2' message (core to base) 17 ( Fig. 12 ) from the core network 500, the radio network controller 200 identifies the RRC connection for the mobile station 300 from the connection ID in the message (step 24 in Fig. 14 ), and transmits a paging 2 message (DCCH) 13 of the RRC protocol to the mobile station 300 via a dedicated control channel DCCH.
- DCCH paging 2 message
- the paging 2 message (DCCH) 85 has been transmitted from the radio network controller 73 to the mobile station 74.
- two types of paging message (core to base) are provided so that information recognized by a core network is transmitted to a radio network controller, allowing the radio network controller to determine whether or not a search for a common ID is required based on the information. Accordingly, the amount of processes for searching for a common ID in a paging procedure at the radio network controller is reduced.
- a plurality of radio network controllers 200, 201, ... are connected to a mobile switching center 450 included in a core network and that base stations 250 are connected to each of the radio network controllers 200.
- the amount of processes for searching for the common ID of the mobile station 300 is reduced in the paging procedure at each of the radio network controllers 200, as described above.
- the mobile switching center 450 when a paging request arrives at the mobile switching center 450, if the paging area spans across the radio network controller 200 and the radio network controller 201, the mobile switching center 450 transmits paging messages (core to base) to the radio network controller 200 and the radio network controller 201, necessitating searching processing at both of the radio network controllers.
- the connection with the mobile station 300 can be identified as residing at the radio network controller 200, and thus no paging message (core to base) is transmitted to the radio network controller 201. That is, transmission of a useless paging message (core to base) to the radio network controller 201 is prevented. Accordingly, only the radio network controller associated with the connection is required to search for the common ID, and the other radio network controllers are not required to execute useless processes, serving to avoid occurrence of congestion.
- paging 1' message core to base
- paging 2 message core to base
- Fig. 16 shows the configuration of the paging 1' message (core to base)
- Fig. 17 shows the configuration of the paging 2 message (core to base), respectively.
- a "search-not-required flag" is added to the information elements of the paging message shown in Fig. 1 .
- the search-not-required flag is a flag for notifying a radio network controller from a core network of whether or not it is required to search whether or not an RRC connection for a mobile station has been established at the radio network controller.
- the paging 2 message (core to base) shown in Fig. 17 is the same message as the one shown in Fig. 6 , and is a new message that is completely different from the paging message (core to base) shown in Fig. 1 .
- the paging 2 message (core to base) does not have any information element.
- a separated core network and a combined core network without co-ordination function use only the paging 1' message (core to base) ( Fig. 16 ).
- a combined core network with co-ordination function uses either both the paging 1' message (core to base) ( Fig. 16 ) and the paging 2 message (core to base) ( Fig. 17 ) or only the paging 1' message (core to base) ( Fig. 16 ).
- the paging 1' message (core to base) ( Fig. 16 ) is used when the first paging (an RRC connection has not been established for the mobile station) is reliably assumed or when a possibility of the first paging exists.
- the paging 2 message (core to base) ( Fig. 17 ) is used when the second or a subsequent paging (an RRC connection has been established for the mobile station) is reliably assumed.
- Fig. 18 shows the operations of a core network 400, a radio network controller 200, a mobile station 300, and messages exchanged.
- the core network 400 without co-ordination function transmits a paging 1' message (core to base) 14' ( Fig. 16 ) to the radio network controller 200 in a connectionless manner. At this time, the search-not-required flag in the paging 1' message (core to base) 14' is set to "OFF.”
- the radio network controller 200 Upon receiving the paging 1' message (core to base) 14', the radio network controller 200 checks the search-not-required flag in the message (step 22' in Fig. 18 ). Inasmuch as the search-not-required flag is "OFF," a next common ID is searched for and checked (step 21 in Fig. 18 ). The subsequent sequence is similar as that in the conventional system. In this case, the presence/absence of an RRC connection is determined based on the table shown in Fig. 3 , that is, the table indicative of associations between common IDs and RRC connections, and a paging 1 message (PCCH) 12 or a paging 2 message (DCCH) 13 of the RRC protocol is transmitted to the mobile station 300.
- PCCH paging 1 message
- DCCH paging 2 message
- a paging processing from a core network with co-ordination function will be described with reference to Figs. 19 to 22 .
- a case where an RRC connection has not been established for a destination mobile station that is, a case of the first paging message, will be described with reference to Figs. 19 and 20 .
- Fig. 19 shows an example in which a circuit switched call to a mobile station 34 that is not busy in a communication is received.
- a circuit switched call is received at a mobile switching center 30 included in a core network 400 ( Fig. 18 )
- a circuit service function unit 32 transmits a query 42 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 31.
- the circuit service function unit 32 receives a reply 43 to the effect that "the mobile station 34 is not busy in a communication" from the packet service function unit 31 and recognizes the first paging.
- the circuit service function unit 32 prepares a paging 1' message (core to base) ( Fig. 16 ), sets the search-not-required flag "ON" to indicate that "a search has already been performed” and that "an RRC connection has not been established for the mobile station 34", and transmits the paging 1' message (core to base) 44' ( Fig. 16 ) to the radio network controller 33 by connectionless SCCP.
- Fig. 20 shows the operation of the radio network controller that has received the paging 1' message (core to base) 44'.
- the radio network controller 200 upon receiving the paging 1' message (core to base) 15' ( Fig. 16 ) from the core network 500, the radio network controller 200 checks the value of the search-not-required flag in the message (step 22' in Fig. 20 ). Inasmuch as the search-not-required flag is "ON," the processing of searching for the common ID is skipped, and a paging 1 message (PCCH) 12 of the RRC protocol is transmitted to the mobile station 300 via a paging control channel. Referring back to Fig. 19 , the paging 1 message (PCCH) 45 (12 in Fig. 20 ) has been transmitted from the radio network controller 33 to the mobile station 34.
- PCCH paging 1 message
- the radio network controller 200 determines that an RRC connection has not been established for the mobile station 300 (connectionless). Thus, a search for the common ID is not required.
- Fig. 21 shows an example in which a circuit switched call to a mobile station 54 that is busy in a packet service communication is received.
- a circuit switched call 61 is received at a mobile switching center 50 included in a core network 500 ( Fig. 22 )
- a circuit service function unit 52 transmits a query 62 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 51.
- the circuit service function unit 52 receives a reply 63 to the effect that "the mobile station 54 is busy in a communication" and recognizes that the mobile station 54 has already established an RRC connection.
- the circuit service function unit 52 prepares a paging 2 message (core to base) ( Fig.
- Fig. 17 shows the operation of the radio network controller that has received the paging 2 message (core to base) 64.
- the radio network controller 200 upon receiving the paging 2 message (core to base) 16 ( Fig. 17 ) from the core network 500, the radio network controller 200 identifies which of a plurality of RRC connections is the RRC connection for the mobile station 300 based on the SCCP connection between the core network 500 and the radio network controller 200 (step 23 in Fig. 22 ). Then, the radio network controller 200 transmits a paging 2 message (DCCH) 13 of the RRC protocol that has been identified to the mobile station 300 via a dedicated control channel DCCH.
- DCCH paging 2 message
- the paging 2 message (DCCH) 65 (13 in Fig. 22 ) has been transmitted from the radio network controller 53 to the mobile station 54.
- a response 66 from the mobile station 54 may be returned either using the SCCP connection 67 for a packet call between the mobile switching center 50 and the radio network controller 53 or by a new SCCP connection establishing request 68 for a circuit switched call between the mobile switching center 50 and the radio network controller 53.
- the radio network controller 200 determines that an RRC connection has been established for the mobile station 300 (connection oriented). Thus, a search for the common ID is not required. Furthermore, in this case, checking of the search-not-required flag is not required either.
- two types of paging message (core to base) with respect to the co-ordination function of core networks are newly provided so that means are provided for transmitting information recognized by a core networks to a radio network controller, allowing the radio network controller to determine whether or not a search for a common ID is required based on the information. Accordingly, the amount of processes for searching for a common ID in a paging procedure at the radio network controller is reduced.
- Fig. 23 shows an example in which a circuit switched call to a mobile station 54 that is busy in a packet service communication is received.
- a circuit switched call 61 is received at a mobile switching center 50 included in a core network 400
- a circuit service function unit 52 transmits a query 62 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 51.
- the circuit service function unit 52 receives a reply 63 to the effect that "the mobile station 54 is busy in a communication" and recognizes that the mobile station 54 has already established an RRC connection.
- the circuit service function unit 52 sets the search-not-required flag in the paging 1' message (core to base) 15' ( Figs. 20 and 16 ) to "OFF.”
- the radio network controller 200 Upon receiving the paging 1' message (core to base) 15' ( Fig. 16 ), the radio network controller 200 checks the search-not-required flag in the message (step 22' in Fig. 20 ). Inasmuch as the search-not-required flag is "OFF," a next common ID is searched and checked (step 21 in Fig. 20 ). The subsequent sequence is similar as that in the conventional system. In this case, whether the presence/absence of an RRC connection is determined based on the table shown in Fig. 3 , that is, the table indicative of associations between common IDs and RRC connections, and a paging 1 message (PCCH) 12 or a paging 2 message (DCCH) 13 of the RRC protocol is transmitted to the mobile station 300. In this case, inasmuch as an RRC connection has already been set up for the mobile station, the paging 2 message (DCCH) 13 is transmitted to the mobile station 300.
- PCCH paging 1 message
- DCCH paging 2 message
- the paging 2 message (DCCH) 65 (13 in Fig. 20 ) has been transmitted from the radio network controller 53 to the mobile station 54.
- a response 66 from the mobile station 54 is returned by a new SCCP connection establishing request 68 for a circuit switched call between the mobile switching station 50 and the radio network controller 53.
- the radio network controller 200 determines that an RRC connection has been established for the mobile station 300 and thus searches for the common ID.
- Fig. 24 shows the configuration of a paging 2' message (core to base) according to the fourth embodiment of the paging 2 message (core to base), which is identical to the message shown in Fig. 12 .
- the message is transmitted by connectionless SCCP and a connection ID is added to the information elements.
- Fig. 25 shows an example in which a circuit switched call to a mobile station 74 that is busy in a packet service communication is received.
- a circuit switched call 81 is received at a mobile switching center 70 included in a core network
- a circuit service function unit 72 transmits a query 82 as to "whether or not the destination mobile station is busy in a communication" to a packet service function unit 71.
- the circuit service function unit 72 receives a reply 83 to the effect that "the mobile station 74 is busy in a communication" from the packet service function unit 71 and recognizes that the mobile station 74 has already established an RRC connection.
- the circuit service function unit 72 sets a connection ID indicating an SCCP connection that has been established for a packet call between the mobile switching center 70 and a radio network controller 73 in a paging 2' message (core to base) ( Fig. 24 ), and transmits the paging 2' message (core to base) 84 ( Fig. 24 ) to the radio network controller 73 in a connectionless manner.
- Fig. 26 shows the operation of the radio network controller that has received the paging 2' message (core to base) 84.
- the radio network controller 200 upon receiving the paging 2' message (core to base) 17 ( Fig. 24 ) from the core network 500, the radio network controller 200 identifies the RRC connection for the mobile station 300 from the connection ID in the message (step 24 in Fig. 26 ), and transmits a paging 2 message (DCCH) 13 of the RRC protocol via a dedicated control channel DCCH.
- DCCH paging 2 message
- the paging 2 message (DCCH) 85 has been transmitted from the radio network controller 73 to the mobile station 74.
- the radio network controller 200 determines that an RRC connection has been established for the mobile station 300 similarly to the case of paging 2. Thus, a search for the common ID is not required either in this case. Furthermore, checking of the search-not-required flag is not required either in this case.
- two types of paging message (core to base) are provided so that information recognized by a core network is transmitted to a radio network controller, allowing determination as to whether or not a search for a common ID is required based on the information. Accordingly, the amount of processes for searching for a common ID in a paging procedure at the radio network controller is reduced.
- Fig. 27 is a diagram showing the operations of the paging systems according to the third and the fourth embodiments. Referring to the figure, a search for the common ID is required if the search-not-required flag is "OFF," whereas if the search-not-required flag is "ON" and if the message transmitted from the core network to the radio network controller is paging 1', it is determined that an RRC connection has not been established for the mobile station and thus a search for the common ID is not required.
- a plurality of radio network controllers 200, 201, ... is connected to a mobile switching center 450 included in a core network, and base stations 250 are connected to each of the radio network controllers 200.
- the amount of processes for searching for the common ID of the mobile station 300 in the paging procedure at each of the radio network controllers 200 is reduced, as described above.
- the mobile switching center 450 when a paging request arrives at the mobile switching center 450, if the paging area spans across the radio network controller 200 and the radio network controller 201, the mobile switching center transmits paging messages (core to base) to the radio network controllers 200 and 201, necessitating searching processing at both of the radio network controllers.
- the connection with the mobile station 300 can be identified as residing at the radio network controller 200, and no paging message (core to base) is transmitted to the radio network controller 201. That is, transmission of a useless paging message (core to base) to the radio network controller 201 is prevented. Accordingly, only the radio network controller associated with the connection is required to search for the common ID, and the other radio network controllers are not required to perform useless processes, serving to avoid occurrence of congestion.
Applications Claiming Priority (3)
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JP25372599 | 1999-09-08 | ||
JP2000146713A JP3419386B2 (ja) | 1999-09-08 | 2000-05-18 | ページングシステム及びページング方法 |
EP00957051A EP1211909A4 (fr) | 1999-09-08 | 2000-09-08 | Systeme de recherche de personnes |
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EP00957051.6 Division | 2000-09-08 | ||
EP00957051A Division EP1211909A4 (fr) | 1999-09-08 | 2000-09-08 | Systeme de recherche de personnes |
Publications (3)
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EP2291041A2 true EP2291041A2 (fr) | 2011-03-02 |
EP2291041A3 EP2291041A3 (fr) | 2011-04-06 |
EP2291041B1 EP2291041B1 (fr) | 2016-08-24 |
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EP10181827.6A Expired - Lifetime EP2291041B1 (fr) | 1999-09-08 | 2000-09-08 | Système de radiomessagerie |
EP00957051A Withdrawn EP1211909A4 (fr) | 1999-09-08 | 2000-09-08 | Systeme de recherche de personnes |
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EP00957051A Withdrawn EP1211909A4 (fr) | 1999-09-08 | 2000-09-08 | Systeme de recherche de personnes |
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US (2) | US7450956B1 (fr) |
EP (2) | EP2291041B1 (fr) |
JP (1) | JP3419386B2 (fr) |
KR (1) | KR100448614B1 (fr) |
CN (2) | CN1764318B (fr) |
AU (1) | AU6876100A (fr) |
BR (1) | BR0014256A (fr) |
HK (1) | HK1086150A1 (fr) |
WO (1) | WO2001019115A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3419386B2 (ja) | 1999-09-08 | 2003-06-23 | 日本電気株式会社 | ページングシステム及びページング方法 |
EP1372349A1 (fr) * | 2002-06-11 | 2003-12-17 | Alcatel | Architecture de réseau d'accès radio et procédé d'acheminement selectif d'appel |
US20060073841A1 (en) * | 2004-10-01 | 2006-04-06 | Murali Narasimha | Method and communication system for establishing a voice call connection |
US20100165927A1 (en) * | 2006-06-21 | 2010-07-01 | Jung-Im Kim | Method for paging terminal of rrc connected state in lte system |
US8515436B2 (en) * | 2008-03-27 | 2013-08-20 | Qualcomm Incorporated | Management of wireless connections |
US9839001B2 (en) * | 2009-03-23 | 2017-12-05 | Apple Inc. | Methods and apparatus for optimizing paging mechanisms and publication of dynamic paging mechanisms |
CN104219656B (zh) * | 2010-08-26 | 2017-10-17 | 华为技术有限公司 | 机器类型通讯设备的业务控制方法和相关装置及系统 |
CN102387563B (zh) | 2010-08-26 | 2015-05-27 | 华为技术有限公司 | 机器类型通讯设备的业务控制方法和相关装置及系统 |
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JPH09168053A (ja) | 1995-09-27 | 1997-06-24 | At & T Corp | 遠隔装置への保守情報の通信方法及び保守情報を受信する装置 |
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JP2878396B2 (ja) | 1990-06-08 | 1999-04-05 | 日本電信電話株式会社 | 通信中回線交換着信制御方法 |
KR0123398B1 (ko) * | 1994-11-30 | 1997-11-19 | 양승택 | Cdma 이동통신 교환기에서 하드 핸드오프 제어방법 |
US6230009B1 (en) | 1996-12-27 | 2001-05-08 | At&T Wireless Services, Inc. | Method and apparatus for alerting a station in one network of a requested communication from a second network |
US5999521A (en) | 1997-06-06 | 1999-12-07 | Lucent Technologies Inc. | System and method for providing local services to a wireless telephone served by another system |
US6188911B1 (en) | 1997-09-09 | 2001-02-13 | Telefonaktiebolaget Lm Ericsson (Publ) | Efficient message transmission in a mobile communication system |
US6608832B2 (en) * | 1997-09-25 | 2003-08-19 | Telefonaktiebolaget Lm Ericsson | Common access between a mobile communications network and an external network with selectable packet-switched and circuit-switched and circuit-switched services |
FI106286B (fi) | 1997-09-30 | 2000-12-29 | Nokia Networks Oy | Matkaviestintilaajan kutsu pakettiyhteyden muodostamiseksi |
US6259925B1 (en) * | 1997-11-19 | 2001-07-10 | Telefonaktiebolaget Lm Ericsson (Publ) | Retention of radio resource connection for short message service message delivery in a cellular telephone network |
JP3540588B2 (ja) | 1998-01-07 | 2004-07-07 | 株式会社エヌ・ティ・ティ・ドコモ | 移動パケット通信網、移動通信端末およびパケット交換方法 |
FI106172B (fi) * | 1998-01-29 | 2000-11-30 | Nokia Networks Oy | Menetelmä uudelleenkonfiguroida solukkoradioverkossa yhteys |
US6292667B1 (en) * | 1998-05-05 | 2001-09-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Multicell area paging for cellular telecommunications system |
CA2343026C (fr) | 1998-10-06 | 2007-01-09 | Nokia Networks Oy | Procede et appareil de recherche de personnes |
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JP3419386B2 (ja) | 1999-09-08 | 2003-06-23 | 日本電気株式会社 | ページングシステム及びページング方法 |
GB9921706D0 (en) | 1999-09-14 | 1999-11-17 | Nokia Telecommunications Oy | Relocation in a communication system |
US20040083876A1 (en) * | 2002-11-06 | 2004-05-06 | Maegli Jack William | Multiple diameter tube wind chime or tubular bell comprised of tubes singularly air resonant tuned for maximum expression of primary frequency |
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2000
- 2000-05-18 JP JP2000146713A patent/JP3419386B2/ja not_active Expired - Lifetime
- 2000-09-08 WO PCT/JP2000/006149 patent/WO2001019115A1/fr active IP Right Grant
- 2000-09-08 EP EP10181827.6A patent/EP2291041B1/fr not_active Expired - Lifetime
- 2000-09-08 CN CN200510118542XA patent/CN1764318B/zh not_active Expired - Lifetime
- 2000-09-08 CN CNB008153833A patent/CN1254145C/zh not_active Expired - Lifetime
- 2000-09-08 EP EP00957051A patent/EP1211909A4/fr not_active Withdrawn
- 2000-09-08 KR KR10-2002-7003044A patent/KR100448614B1/ko active IP Right Grant
- 2000-09-08 AU AU68761/00A patent/AU6876100A/en not_active Abandoned
- 2000-09-08 BR BR0014256-5A patent/BR0014256A/pt not_active Application Discontinuation
- 2000-09-08 US US10/069,957 patent/US7450956B1/en not_active Expired - Lifetime
-
2006
- 2006-07-25 HK HK06108286.0A patent/HK1086150A1/xx not_active IP Right Cessation
- 2006-12-08 US US11/635,682 patent/US8792918B2/en not_active Expired - Fee Related
Patent Citations (2)
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JPH01316050A (ja) | 1988-06-16 | 1989-12-20 | Nec Corp | ページング接続方式 |
JPH09168053A (ja) | 1995-09-27 | 1997-06-24 | At & T Corp | 遠隔装置への保守情報の通信方法及び保守情報を受信する装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1764318A (zh) | 2006-04-26 |
KR100448614B1 (ko) | 2004-09-13 |
EP1211909A1 (fr) | 2002-06-05 |
CN1387736A (zh) | 2002-12-25 |
JP3419386B2 (ja) | 2003-06-23 |
EP2291041A3 (fr) | 2011-04-06 |
CN1764318B (zh) | 2010-11-10 |
US20070082685A1 (en) | 2007-04-12 |
HK1086150A1 (en) | 2006-09-08 |
EP2291041B1 (fr) | 2016-08-24 |
AU6876100A (en) | 2001-04-10 |
BR0014256A (pt) | 2005-12-06 |
US7450956B1 (en) | 2008-11-11 |
US8792918B2 (en) | 2014-07-29 |
EP1211909A4 (fr) | 2007-08-15 |
CN1254145C (zh) | 2006-04-26 |
KR20020032573A (ko) | 2002-05-03 |
JP2001148878A (ja) | 2001-05-29 |
WO2001019115A1 (fr) | 2001-03-15 |
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